import time
from datetime import datetime, timedelta

from flask import current_app, jsonify
from flask import g
from flask import redirect
from flask import render_template, request
from flask import session
from flask import url_for

from info import constants, db
from info.models import User, News, Category
from info.utils.common import user_login_data
from info.utils.image_storage import storage
from info.utils.response_code import RET
from . import admin_blue


# 新闻分类
@admin_blue.route('/news_type',methods = ["POST","GET"])
def news_type():
    if request.method =="GET":
        # 获取所有的分类数据
        categories = Category.query.all()
        # 定义列表保存分类数据
        categories_dicts = []
        for category in categories:
            # 获取字典
            cate_dict = category.to_dict()
            # 拼接内容
            categories_dicts.append(cate_dict)

        # 返回内容
        return render_template("admin/news_type.html",data={"categories": categories_dicts})

    """修改或者添加分类"""
    category_id = request.json.get("id")
    category_name = request.json.get("name")
    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 判断是否有分类 id
    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="查询数据失败")
        if not category:
            return jsonify(errno=RET.NODATA, errmsg="未查询到分类信息")
        category.name =category_name
    else:
        # 如果没有分类id,测试添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)

    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    return jsonify(errno=RET.OK, errmsg="保存数据成功")







# 新闻审核编辑
@admin_blue.route('/news_edit_detail',methods = ["GET","POST"])
def news_edit_detail():
    """新闻编辑详情"""
    # 获取参数
    if request.method == "GET":
        news_id = request.args.get("news_id")

        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})
       # 查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not  news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})
        # 查询分类的数据
        categories = Category.query.all()
        categories_li = []
        for category in categories:
            # 增加一个字段,用来描述是否需要选中
            c_dict = category.to_dict()
            c_dict["is_selected"]  =  False
            # 只有当新闻的分类ID和数据库的一样时,才会设置位Ture
            if category.id == news.category_id:
                c_dict["is_selected"] = True

            categories_li.append(c_dict)
        # 移除,最新,分类
        categories_li.pop(0)
        data = {"news":news.to_dict(),"categories":categories_li}
        return render_template("admin/news_edit_detail.html",data = data)

    #  POST请求修改新闻模型
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")

    # 1.1判断数据是否有值
    if not all([title,digest,content,category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")
        # 2. 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")

        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key

    # 3. 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id
    # 4.保存到数据库
    try:
        db.session.commit()

    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    # 5.返回结果
    return jsonify(errno=RET.OK, errmsg="编辑成功")


@admin_blue.route('/news_edit')
def news_edit():
    """返回新闻列表"""
    page = request.args.get("p",1)
    keywords = request.args.get(("keywords",""))
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检所选项
            filters.append(News.title.contains(keywords))
        # 查询  # news.create_time.desc()以时间进行排序
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,
                                                                                          constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    context = {"total_page":total_page,"current_page":current_page,"news_list":news_dict_list}

    return render_template("admin/news_edit.html",data = context)



# 新闻审核详情
@admin_blue.route('/news_review_detail',methods = ["GET","POST"])
def news_review_detail():
    """新闻审核"""
    # 获取新闻id
    if request.method =="GET":
        news_id = request.args.get("news_id")
        if not news_id:
            return render_template("admin/news_review_detail.html",data = {"errmsg":"未查询到此新闻"})

        # 通过id查询新闻
        news =None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        # 返回数据
        data = {"news":news.to_dict()}
        return render_template('admin/news_review_detail.html', data=data)

    # 执行审核操作
    # 1.获取参数
    news_id = request.json.get("news_id")
    action = request.json.get("action")
    # 2.判断参数
    if not all([news_id,action]):
        return jsonify(errno = RET.PARAMERR,errmsg = "参数错误")
    if action not in("accept","reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    news = None
    try:
        # 3.查询新闻
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

    # 4.根据不同的状态设置不同的值

    if action =="accept":
        news.status = 0
    else:
        # 拒绝通过,需要获取原因
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        news.reason = reason
        news.status = -1

    # 提交审核,保存数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="数据保存失败")
    return jsonify(errno=RET.OK, errmsg="操作成功")


# 新闻审核
@admin_blue.route('/news_review')
def news_review():
    """返回待审核新闻列表,这里主要用查询语句"""

    page = request.args.get("p",1)
    keywords = request.args.get("keywords","")

    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = []
    total_page = 1
    # 处理可选参数
    filters = [News.status != 0]
    if keywords:
        filters.append(News.title.contains(keywords))
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,
                                                                                          constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)


    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    context = {
        "total_page":total_page,
        "current_page":current_page,
        "news_list":news_dict_list
    }

    return render_template("admin/news_review.html",data = context)








# 用户列表
@admin_blue.route('/user_list')
def user_list():
    """获取用户列表"""

    # 获取参数
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 设置变量默认值

    users = []
    current_page = 1
    total_page = 1
    # 查询数据
    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page,
                                                                                                       constants.ADMIN_USER_PAGE_MAX_COUNT,
                                                                                                       False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    users_list = []
    for user in users:
        users_list.append(user.to_admin_dict())

    context = {"total_page": total_page, "current_page": current_page, "users": users_list}
    return render_template("admin/user_list.html",data = context)


# 用户统计
@admin_blue.route('/user_count')
@user_login_data
def user_count():
    # 一.上方统计数据

    # 1.用户总数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据库错误")

    # 2. 当月新增--> 获取同年同月1好的时间.从这个时间开始查询数据即可

    """
    2018-06-01 00:00:00
    2018-06-27 15:14:11

    1.如果获取 年月
    2.如何将字符串按照一定的格式转换位日期对象

    """
    # 1. 获取年月日
    # 获取当前时间有两种方式
    # 1.now = datetime.now()
    # 2.now = time.localtime)
    # now = time.localtime()
    # mon_begin = "%d-%02d-01" %(now.tm_year,now.tm_mon)
    # # 2. 将字符串.转换日期
    # # strptime : 专门用来讲字符串转日期的
    # begin_date = datetime.strptime(mon_begin,"%Y-%m-%d")
    # # User.query.filter(User.create_time >= 当月开始时间).count()

    # 　当月新增用户数量

    mon_count = 0
    now = time.localtime()
    try:
        # 获取当前时间 样式
        # time.struct_time(tm_year=2018, tm_mon=6, tm_mday=27, tm_hour=21, tm_min=58, tm_sec=27, tm_wday=2, tm_yday=178, tm_isdst=0)

        # 获取一部分时间
        # 拿出年和月 每个月01 固定
        mon_begin = "%d-%02d-01" % (now.tm_year, now.tm_mon)
        # 将字符串转成日期
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        # 创建时间大于现在的时间
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 3.查询日新增数
    day_count = 0
    try:
        day_begin = "%d-%02d-%02d" % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, "%Y-%m-%d")
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
    # 二.下方活跃度
    '''
    统计最近一个月每一天的用户活跃度(最后登录)
    # 2018-5-28 --> 2018-5-28 00:00:00 -- 2018-5-29 00:00:00
    User.last_login >= day_begin_date,User.last_login < day_end_date

    1.如何获取制定日期的下一天时间
    2.如何快速实现前一个的查询(for)

    '''
    # 查询图表信息
    # 获取到当天00:00:00时间
    # strftime: 将日期按照一定的格式转换字符串的用法和strptime相反
    now_date_str = datetime.now().strftime('%Y-%m-%d')
    now_date = datetime.strptime(now_date_str, '%Y-%m-%d')

    # 定义空数组,保存数据

    active_date = []
    active_count = []

    # 依次添加数据,再反转
    for i in range(0, 31):
        # 中间的 "-" 是减号
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        # 获取计算的当天日期['2018-06-30']
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)

        # 获取当天的活跃数
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()

    # 用字典来保存数据
    data = {
        "total_count": total_count,
        "mon_count": mon_count,
        "day_count": day_count,
        "active_date": active_date,
        "active_count": active_count,

    }
    return render_template("admin/user_count.html", data=data)


@admin_blue.route('/index')
@user_login_data
def index():
    user = g.user
    return render_template("admin/index.html", user=user.to_dict() if user else None)


@admin_blue.route('/login', methods=["GET", "POST"])
@user_login_data
def login():
    if request.method == "GET":

        # 去session 中取指定的值
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", False)
        # 如果用户id存在,并且是管理员.那么直接跳转管理后台主页
        if user_id and is_admin:
            return redirect(url_for("admin.index"))

        return render_template("admin/login.html")

    # 取到登录的参数
    username = request.form.get("username")
    password = request.form.get("password")

    # 判断参数
    if not all([username, password]):
        return render_template("admin/login.html", errmsg="参数错误")

    # 查询当前用户
    try:
        user = User.query.filter(User.mobile == username, User.is_admin == True).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="用户信息查询失败")

    if not user or not user.check_passowrd(password):
        return render_template("admin/login.html", errmsg="用户名或者密码错误")

    # 保存用户的登录信息
    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["is_admin"] = user.is_admin

    # 跳转到后面的管理首页

    # return render_template("admin/login.html")
    return redirect(url_for("admin.index"))
